Herdman, W.A. Report to the government of Ceylon on the pearl oyster fisheries of the Gulf of Mannar / by Herdman, W.A. - London Royal Society 1905 - xvi, 326p ill. 29 cm. With supplementary reports upon the Marine biology of Ceylon by other naturalists Subjects--Topical Terms: pearl oyster fisheriesMarine biology Dewey Class. No.: 639.41206 / HER